Patent · US Active

Amalgam spheres for energy-saving lamps and the manufacture thereof

US8497622B2 · kind B2 · utility

3Cited by

4References

19Claims

0Family size

Assignee

UMICORE AG & CO. KG · DE

Inventors

Georg Ptaschek · Rosbach, DE
Calogero Di Vincenzo · Hanau, DE

Key dates

Filing date	Apr 22, 2008
Grant date	Jul 30, 2013
Priority date	—
Expiry date	Oct 30, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2982
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Energy-saving lamps contain a gas filling of mercury vapor and argon in a gas discharge bulb. Amalgam spheres are used for filling the gas discharge bulb with mercury. A tin amalgam having a high proportion by weight of mercury in the range from 30 to 70% by weight is proposed. Owing to the high mercury content, the amalgam spheres have liquid amalgam phases on the surface. Coating of the spheres with a tin or tin alloy powder converts the liquid amalgam phases on the surface into a solid amalgam having a high tin content. This prevents conglutination of the amalgam spheres during storage and processing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.